Home / 42,658.85-64,000.57-13,081.05

Finding the Fourth Proportional to 42,658.85, 64,000.57 and 13,081.05

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Solution

The fourth proportional to 42,658.85, 64,000.57 and 13,081.05 is: 19,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,658.85 : 64,000.57 = 13,081.05 : x
  2. Step 2: Convert to fraction form
    42,658.85/64,000.57 = 13,081.05/x
  3. Step 3: Cross multiply
    42,658.85x = 64,000.57 × 13,081.05
  4. Step 4: Simplify right side
    42,658.85x = 837,194,656.20
  5. Step 5: Solve for x
    x = 837,194,656.20/42,658.85
  6. Step 6: Final answer
    x = 19,625.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.